This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A096606 #3 Mar 30 2012 18:50:44 %S A096606 -1,-1,-1,0,0,-1,0,0,0,0,0,-1,0,0,0,0,0,0,1,0,0,0,0,-1,0,0,0,0,0,0,1, %T A096606 0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,-1,0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0, %U A096606 0,1,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,-1,0,0,0 %N A096606 a(n) = A002264(n-1) - A096605(n). %K A096606 sign %O A096606 1,1 %A A096606 _Reinhard Zumkeller_, Jun 30 2004